530 FORM TYPE SLIDE by Klaus Kemp

This type slide of 530 forms of diatoms is shown to the left. Above is a low power dark ground illumination view under the microscope. It was produced for the author by special request by the late Klaus Kemp in 2004. I asked him to produce a slide of every diatom he had access to. Every specimen is finely preserved with its features clearly visible with the appropriate resolution and magnification. The coverslip is not mounted directly on the diatoms, being supported by three little metal supports. Although this avoided deforming or breaking the diatoms, it limits the depth of focus. Unfortunately, he was unable to supply me with a matching species list. Shown below are some of the individual forms shown at higher resolution and magnification via DIC illumination. Some of the last few were taken with 100X oil immersion DIC illumination. A few are stacked images.